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double ceil(double d)

double ceil(float f)

public class Test{
    public static void main(String args[]){
        double d = 100.675;
        float f = -90;    

        System.out.println(Math.ceil(d));
        System.out.println(Math.ceil(f)); 

        System.out.println(Math.floor(d));
        System.out.println(Math.floor(f)); 
    }
}

101.0
-90.0
100.0
-90.0